Modular tank



FIG. 1 is a perspective view of a modular tank showing my new design;

FIG. 2 is a top plan view of the modular tank of FIG. 1;

FIG. 3 is a front elevational view of the modular tank of FIG. 1, a rear elevational view being equivalent;

FIG. 4 is a bottom plan view of the modular tank of FIG. 1; and,

FIG. 5 is a left side elevational view of the modular tank of FIG. 1, a right side elevational view being equivalent.

The broken line showing of the environment is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for modular tank, as shown and described. 